Source code for pennylane_qsharp.ops

# Copyright 2019 Xanadu Quantum Technologies Inc.

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Custom operations
=================

**Module name:** :mod:`pennylane_qsharp.ops`

.. currentmodule:: pennylane_qsharp.ops

Contains some additional PennyLane qubit operations.

Operations
----------

.. autosummary::
    S
    T
    CCNOT

Code details
~~~~~~~~~~~~
"""
from pennylane.operation import Operation


class S(Operation):
    r"""S(wires)
    S gate.

    .. math:: S = \begin{bmatrix} 1 & 0 \\ 0 & i \end{bmatrix}

    **Details:**

    * Number of wires: 1
    * Number of parameters: 0

    Args:
        wires (int): the subsystem the gate acts on
    """
    num_params = 0
    num_wires = 1
    par_domain = None


class T(Operation):
    r"""T(wires)
    T gate.

    .. math:: T = \begin{bmatrix}1&0\\0&e^{i \pi / 4}\end{bmatrix}

    **Details:**

    * Number of wires: 1
    * Number of parameters: 0

    Args:
        wires (int): the subsystem the gate acts on
    """
    num_params = 0
    num_wires = 1
    par_domain = None


class CCNOT(Operation):
    r"""CCNOT(wires)
    Controlled-controlled-not gate.

    .. math::

        CCNOT = \begin{bmatrix}
            1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\
            0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\
            0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 \\
            0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 \\
            0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 \\
            0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 \\
            0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 \\
            0 & 0 & 0 & 0 & 0 & 0 & 1 & 0
        \end{bmatrix}

    **Details:**

    * Number of wires: 3
    * Number of parameters: 0

    Args:
        wires (int): the subsystem the gate acts on
    """
    num_params = 0
    num_wires = 3
    par_domain = None

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